CHICAGO—Quarterback Jay Cutler did what he could to ignite a sputtering Chicago Bears offense in the first half against the Houston Texans on Sunday night and wound up out of the game with a concussion.

Cutler took several shots and scrambled for 37 yards but completed only seven of 14 passes for 40 yards with two interceptions. He didn't come back onto the field for the second half and was replaced by Jason Campbell in a game the Bears lost 13-6.

Jay Cutler injury update: The Bears' QB did not return for the second half. (AP Photo)

The scene has to bring bad memories to Bears followers, as the team went 1-5 without Cutler last year following a broken thumb he suffered in the 10th game of the season.

Ironically, the injury Sunday occurred in a half when the much-maligned Bears offensive line did a fair job of protecting Cutler. He wasn't sacked. His scrambles occurred after waiting several seconds for receivers to come open.

In 2010, Cutler suffered a concussion against the Giants in a loss on a Sunday night and left under similar circumstances, failing to come back in for the second half.

Campbell is not as mobile as Cutler, and although he has a strong arm, the Bears lose something down the field with their backup on the field. Campbell, however, did hit Brandon Marshall with a 45-yard pass in the third quarter that set up a field goal that made it 10-6. Campbell finished 11 of 19 for 94 yards.

"That's why we got Jason," linebacker Brian Urlacher said. "We're better off now than we were last year at this time. Jason did a good job. (It's) a tough situation throwing the ball in these conditions. It can't be easy. I thought he came in and did a good job for us."

Campbell has a lot of experience (70 NFL starts), something that Caleb Hanie did not have when he took over for Cutler last season. Hanie failed miserably, and the Bears fell out of playoff contention.

Going forward, the injury could set up a battle of backup quarterbacks next Monday night when the Bears travel to play at San Francisco. 49ers QB Alex Smith suffered a concussion Sunday in the second quarter and didn’t return.